Special and General Relativity Forum

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Join in expert discussion on special and general relativity discussion. Relativity is the dependence of various physical phenomena on relative motion of the observer and the observed objects.
Undergrad How would Earth's time slow down?
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Graduate New animated video explaining Special and General Relativity.
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Graduate The Poincaré Group and Geodesics in Minkowski Spacetime
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Graduate Time for object to fall length of 10m rope, assuming g=10m/s
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Graduate How fast can light change its direction?
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Graduate What is the velocity of a photon?
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Graduate Are My Calculations for Proper Time on a Rocket in General Relativity Correct?
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Graduate Does the curvature of space-time create the illusion of distance shrinking?
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Graduate Speed of light between a source and target moving wrt to each other
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Graduate Four-Momentum Invariant and Conservation Laws Yielding Contradictory Results
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Graduate What do I see wrong here ? T2 = T1(1 - V/C)
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Undergrad Why light is remains massless even if travelling w/ the fastest velocity?
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Graduate Reciprocity of Time Dilation in General Relativity
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Graduate General confusion with four velocity and four acceleration
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Graduate Acceleration/deceleration questions
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Graduate Could the Michelson & Morley Experiment Have Used Electrons Instead of Light?
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Graduate Do Corners Experience Stress in Curved Space?
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Undergrad Does Moving Train See Stationary Observer at .6c? - I'm Not Sure
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Graduate Is time slowing down or is it just taking a longer amount time?
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Graduate Wikipedia quote on gravitational time dilation
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Undergrad Mass increasing as velocity approaches c
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Graduate A Relativity Experiment I'd Like to See
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Graduate Space time curvature caused by fast electron
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Graduate Trying to understand spacetime curvature
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Graduate Block Time vs Q. Indeterminacy
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Graduate Travel faster than speed of light. According to what reference frame?
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Graduate Question on Black Hole Metrics
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Graduate Faster than Light Travel Question
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Graduate Perceived time and distance at Speed of light
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Graduate Quick tetrad/vierbein question
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Graduate Understanding Frame of Reference in Special Relativity
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Graduate Twin Paradox: Accelerating, Turning Back & Decelerating
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Graduate What is the Significance of the Lambda Symbol in Transformation Matrices?
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Graduate I don't understand photon clocks
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Undergrad Does Relativity Theory Explain Why Racing Drivers Age Slower?
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Undergrad How is relativity theory applied to gps?
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High School Can We Really See Into the Past by Observing Distant Worlds?
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Graduate How are the ways in which time is dialted unified?
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Graduate Simple question about time dilation in accelerated reference frames
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Undergrad How did light speed become the governor of relativity?
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Graduate SR: Questions on Time Synchronization & Relativity
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Graduate Different Slices of Now Observable from Earth?
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Graduate Can Negative Mass Really Defy Gravity?
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Graduate What experiment shows that the universal speed limit is the same as light?
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Undergrad Why Is Light Speed a Limit for Spacecraft?
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Graduate I would like to see the math of something
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Graduate Question about how Time varies with Velocity
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Graduate Spacetime desynchronized in quantum realm?
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Graduate Diagonal Metric and General Relativity: A Fundamental Question
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Graduate What happens to stars in front of a falling observer entering a black hole?
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Graduate Does a Photon Traveling at Light Speed Imply Infinite Mass and Energy?
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Graduate Question of units of B, H in Gaussian system
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Undergrad I have a question for the masses. if you were traveling at 60 mph
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Graduate Metric of 2 Bodies: Superposition & Resulting Tensor
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Graduate Can a Car's Stereo Still Function at the Speed of Light?
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Graduate Understanding Inextendible Worldlines in Manifolds: Examples and Applications
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Mind-Bending Mirror Puzzle: Experience the Impossible in Bali
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Graduate Does time stop for a photon? Why is that a nonsensical question?
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Graduate Gravitational field conceptual question
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Graduate Calculating GPS Accuracy Using Special Relativity and General Relativity
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Graduate What is the observed precession of Mercury?
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Graduate Can Time Dilation Allow for Survival of the Universe's Death?
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Graduate Solving Sliding Clock Fun with Two Photons
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Graduate How Does General Relativity Explain Earth's Shape and Gravity?
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Graduate Is Gravity Just Inertia in Disguise?
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Graduate Relativistic mass increase appearing to form a black hole vs. a real black hole
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Graduate Twins Paradox: The paradox within the paradox
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Graduate Studying special relativity and using the idea of four vectors
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Graduate Objects move into gravity=shorter time?
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Graduate Lorentz Transformations Acceleration: A simple problem
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Graduate A problem in special relativity with a surprising result
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Graduate The principle of inertia and hypothetical FTL particles
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Graduate Is a gravitational circuit possible?
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Graduate Abraham's light momentum breaks special relativity?
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Undergrad Can a human travel to distant stars? And other questions.
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Graduate Solving the Assassin Paradox: A Q&A with Adrian
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Graduate What is the effect of a neutron star's gravity on vertical rays of light?
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Graduate Twin Paradox: Who is Older - B or C?
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Graduate Usefulness of Kretschmann scalar
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High School List of different relative speeds?
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High School If light hits a mirror and then switches direction
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Graduate FTL implies Backward Time Effect
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Graduate About dark matter and the limits of the universe.
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Undergrad Why cant an object travel faster than the speed of light?
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Graduate What are the differences between an object with mass 0 and mass > 0 ?
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Graduate What Do Upper and Lower Indices in Tensor Notation Signify?
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Graduate Einstein's original 'thought experiment'
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Graduate Relativistic doppler effect - inconsistency in my derivations
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Graduate Questions about the speed of light
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Graduate 2nd order correction to gauge transformation
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Graduate Does Time Dilation Apply to the Big Bang's Mass?
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Graduate The speed of light and the mass of a photon
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Graduate Wald's definition of the Cauchy Horizon
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Graduate What if speed limit is slightly faster than light?
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Graduate Redshift and Weak equivalence principle
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Graduate What is the Metric Tensor and How is it Used in Tensors?
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High School Explaining Causality: How and Why it Works
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Graduate Noob question about lorentz factor
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Graduate How do accelerometers measure acceleration without using relative motion?
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Graduate How Does Gravity Store Arbitrarily Negative Energy?
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